| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Houakhoua, Xang | 01170 |
| Postal/ZIP Codes in Houana, Xang | 01170 |
| Postal/ZIP Codes in Nakhai, Xang | 01170 |
| Postal/ZIP Codes in Nakhanthoung, Xang | 01170 |
| Postal/ZIP Codes in Nangam Kao, Xang | 01170 |
| Postal/ZIP Codes in Nangam Mai, Xang | 01170 |
| Postal/ZIP Codes in Natan, Xang | 01170 |